CN109167382A - A kind of double-fed fan motor unit fault traversing control method and system - Google Patents
A kind of double-fed fan motor unit fault traversing control method and system Download PDFInfo
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- CN109167382A CN109167382A CN201810868128.8A CN201810868128A CN109167382A CN 109167382 A CN109167382 A CN 109167382A CN 201810868128 A CN201810868128 A CN 201810868128A CN 109167382 A CN109167382 A CN 109167382A
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Classifications
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- H02J3/386—
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/007—Control circuits for doubly fed generators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/10—Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load
- H02P9/102—Control effected upon generator excitation circuit to reduce harmful effects of overloads or transients, e.g. sudden application of load, sudden removal of load, sudden change of load for limiting effects of transients
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P2101/00—Special adaptation of control arrangements for generators
- H02P2101/15—Special adaptation of control arrangements for generators for wind-driven turbines
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
Abstract
The present invention provides a kind of double-fed fan motor unit fault traversing control method and systems, comprising: acquires the set end voltage of double-fed fan motor unit；According to set end voltage and preset threshold value, determine that double-fed fan motor unit enters preset fault traversing control model or enters normal control mode；Fault traversing control model includes, according to the phase hit value of set end voltage, determining the rotor control voltage of double-fed fan motor unit.The fault traversing control model that this method and system provide considers the dynamic effects of voltage-phase, and does not influence system stable operation state, the accuracy of unit allocation when effectively improving set end voltage phase hit, guarantees that double-fed fan motor unit realizes fault traversing.
Description
Technical field
The invention belongs to technical field of electric power, and in particular to a kind of double-fed fan motor unit fault traversing control method and be
System.
Background technique
The energy is the material base for supporting human civilization progress, is the indispensable primary condition of modern social development.It opens
Giving out a contract for a project, to include the renewable energy of solar energy, wind energy, biomass energy, geothermal energy, ocean energy etc. be that world today's energy development becomes greatly
Gesture seeks to develop safe and clean fungible energy source, the energy mode of exploring sustainable development has become the countries in the world energy
Develop the important component of important trend and strategy.Currently, the evaluation and exploration technology of wind-powered electricity generation is increasingly mature, commercial applications
Extensively, constantly cause the attention of countries in the world.Variable-speed wind-power unit reduces machine because wind energy conversion efficiency can be greatly improved
Group bears mechanical stress, realizes that mechanical part and electric part decouple, but also be able to achieve active power and reactive power decoupling
Control improves grid-connected system regulating power and stability, becomes one of main force's type of current commercialized running.But with
Asynchronous power supply large-scale grid connection based on power electronic technique, by power electronic equipment noninertia, overload capacity is weak, anti-electricity
The limitation such as net disturbance ability difference, control ability have stronger dependence to external power grid environment.So that wind-powered electricity generation and power grid it
Between reciprocation become increasingly complex, great variety occurs for electric system energy resource structure, electromagnetic property, electromechanical properties etc..
When power grid occur short circuit when, wind power integration system impedance will change because power electronic equipment noninertia and
Control strategy influences, and wind farm grid-connected voltage-phase will generate larger jump, and it is facies-controlled accurate to influence Wind turbines lock
Degree increases that Wind turbines are active and nothing to destroy the dq shaft power decoupling control condition that orients based on space vector of voltage
Function control loop coupling, influences unit fault ride-through capacity.Currently, various countries' wind-electricity integration directive/guide is required to Wind turbines and exists
Off-grid is not run under certain frequency deviation, duration and Voltage Drop are horizontal, and has been made to the active and reactive characteristic of unit bright
Really require.The variation of double-fed fan motor unit transient characterisitics when for short circuit malfunction, common research method is main at this stage
There is two class of time-domain-simulation and analytical Calculation, failure process is had been generally acknowledged that in research only with the variation of voltage magnitude, without considering
The dynamic of voltage-phase.
Summary of the invention
To overcome above-mentioned the deficiencies in the prior art, the present invention propose a kind of double-fed fan motor unit fault traversing control method and
System.This method and system propose a kind of double-fed fan motor unit rotor voltage direct compensation event based on voltage-phase hop value
Barrier passes through control strategy, improves fault ride-through capacity of the double-fed fan motor grid-connected system when set end voltage phase jumps.
Realize solution used by above-mentioned purpose are as follows:
A kind of double-fed fan motor unit fault traversing control method, thes improvement is that:
Acquire the set end voltage of double-fed fan motor unit；
According to the set end voltage and preset threshold value, determine that double-fed fan motor unit enters preset fault traversing and controls mould
Formula enters normal control mode；
The fault traversing control model includes, according to the phase hit value of the set end voltage, determining double-fed fan motor machine
The rotor of group controls voltage.
First optimal technical scheme provided by the invention, it is improved in that the phase according to the set end voltage
Position hop value determines the rotor control voltage of the double-fed fan motor unit, comprising:
According to the phase hit value of the set end voltage, the compensation rate of rotor control voltage is calculated in real time；
Determine the rotor control voltage for not considering phase hit；
According to the rotor control voltage for not considering phase hit value and the compensation rate, the double-fed fan motor machine is determined
The rotor of group controls voltage.
Second optimal technical scheme provided by the invention, it is improved in that the phase based on the set end voltage
Position hop value calculates the compensation rate of rotor control voltage in real time, is shown below:
Wherein, s is unit revolutional slip, LmFor rotor mutual inductance, LsFor stator inductance, UsFor set end voltage virtual value, Δ urd
(Δ θ) is that the rotor d axis based on phase hit value controls voltage compensation quantity, Δ urq(Δ θ) is the rotor based on phase hit value
Q axis controls voltage compensation quantity, and Δ θ is phase hit value.
Third optimal technical scheme provided by the invention, it is improved in that the phase hit value Δ θ is counted as the following formula
It calculates:
Δ θ=θ1-θ2 (2)
Wherein, θ2For the phase that the quick phaselocked loop of double-fed fan motor unit exports, θ1For the locking phase at a slow speed of double-fed fan motor unit
The phase of ring output.
4th optimal technical scheme provided by the invention, it is improved in that described do not consider that phase is jumped according to
The rotor control voltage of variate and the compensation rate determine the rotor control voltage of the double-fed fan motor unit, such as following formula institute
Show:
Wherein, urdNot consider that the rotor d axis of phase hit controls voltage, urqFor the rotor q axis for not considering phase hit
Control voltage, urd1Voltage, u are controlled to increase the rotor d axis after compensation raterq1Electricity is controlled to increase the rotor q axis after compensation rate
Pressure.
5th optimal technical scheme provided by the invention, it is improved in that the 0.9pu.
6th optimal technical scheme provided by the invention, it is improved in that the machine of the acquisition double-fed fan motor unit
Before the voltage of end, further includes:
Design the double-fed fan motor unit fault traversing control strategy based on voltage-phase hop value；
Based on the double-fed fan motor unit fault traversing control strategy of voltage-phase hop value in double-fed fan motor machine described in determining
It is operated normally in set control system；
The control strategy includes: to determine the control model used, the control according to the set end voltage of double-fed fan motor unit
Molding formula includes fault traversing control model and normal control mode.
A kind of double-fed fan motor unit fault traversing control system, it is improved in that including: voltage acquisition module and control
Mode decision module processed；
The voltage acquisition module, for acquiring the set end voltage of double-fed fan motor unit；
The control model determining module, for determining the double-fed wind according to the set end voltage and preset threshold value
Motor group enters preset fault traversing control model or enters normal control mode；
The fault traversing control model includes the phase hit value according to the set end voltage, determines double-fed fan motor unit
Rotor control voltage.
7th optimal technical scheme provided by the invention, it is improved in that further including fault traversing control module, institute
Stating fault traversing control module includes；Compensation rate computation subunit, conventional voltage determine that subelement and control voltage determine that son is single
Member；
The compensation rate computation subunit calculates rotor control for the phase hit value based on the set end voltage in real time
The compensation rate of voltage processed；The conventional voltage determines subelement, does not consider that the rotor of phase hit controls voltage for determining；
The control voltage determines subelement, for according to the rotor control voltage for not considering phase hit value and institute
Compensation rate is stated, determines the rotor control voltage of the double-fed fan motor unit.
8th optimal technical scheme provided by the invention, it is improved in that the system also includes strategies to design mould
Block and confirmation module；
The strategy design module, for designing the double-fed fan motor unit fault traversing control based on voltage-phase hop value
Strategy；
The confirmation module, for determining the double-fed fan motor unit fault traversing control based on voltage-phase hop value
Strategy operates normally in double-fed fan motor unit control system；
The control strategy includes: to determine the control model used, the control according to the set end voltage of double-fed fan motor unit
Molding formula includes fault traversing control model and normal control mode.
Compared with the immediate prior art, the device have the advantages that as follows:
The present invention provides a kind of double-fed fan motor unit fault traversing control method and systems, according to the double-fed fan motor of acquisition
The set end voltage of unit and preset threshold value determine that double-fed fan motor unit enters preset fault traversing control model or entrance
Normal control mode, and according to the phase hit value of set end voltage, determine the rotor control voltage of double-fed fan motor unit.This hair
The fault traversing control model of bright offer considers the dynamic effects of voltage-phase, and does not influence system stable operation shape
State, the accuracy of unit allocation when effectively improving set end voltage phase hit guarantee that double-fed fan motor unit realizes fault traversing.
Detailed description of the invention
Fig. 1 is a kind of double-fed fan motor unit fault traversing control method flow diagram provided by the invention；
Fig. 2 is a kind of double-fed fan motor unit fault traversing control method detailed process schematic diagram provided by the invention；
Fig. 3 is a kind of control block diagram of double-fed fan motor unit fault traversing control method provided by the invention；
Fig. 4 is a kind of basic structure schematic diagram of double-fed fan motor unit fault traversing control system provided by the invention；
Fig. 5 is a kind of detailed construction schematic diagram of double-fed fan motor unit fault traversing control system provided by the invention.
Specific embodiment
A specific embodiment of the invention is described in further detail with reference to the accompanying drawing.
Embodiment 1:
A kind of double-fed fan motor unit fault traversing control method flow diagram provided by the invention is as shown in Figure 1, comprising:
Step 1: acquiring the set end voltage of double-fed fan motor unit；
Step 2: according to set end voltage and preset threshold value, determining that double-fed fan motor unit is controlled into preset fault traversing
Mode enters normal control mode；
Fault traversing control model includes, according to the phase hit value of set end voltage, determining the rotor of double-fed fan motor unit
Control voltage.
Specifically, double-fed fan motor unit fault traversing control method is as shown in Figure 2, comprising:
Step 101, double-fed fan motor unit rotor voltage direct compensation fault traversing of the design based on voltage-phase hop value
Control strategy, comprising:
Double-fed fan motor unit determines which kind of control model used based on set end voltage state, and control model includes: normal control
Molding formula and double-fed fan motor unit rotor voltage direct compensation fault traversing control model based on voltage-phase hop value.
Wherein, double-fed fan motor unit rotor voltage direct compensation fault traversing control model control block diagram as shown in figure 3,
Include:
1) phase deviation is determined when set end voltage phase hit
Double-fed fan motor unit rotor voltage direct compensation fault traversing control strategy based on voltage-phase hop value, rotor
It controls in voltage direct compensation, phase-locked loop pll 2 is quick phaselocked loop, and phase-locked loop pll 1 is normal phaselocked loop at a slow speed.It can obtain
The locking phase deviation generated when set end voltage phase hit are as follows:
Δ θ=θ1-θ2 (1)
In formula: θ2For 2 output phase of phase-locked loop pll；θ1For 1 output phase of phase-locked loop pll；Δ θ is the jump of set end voltage phase
Locking phase deviation when change.
2) determine that rotor controls voltage compensation quantity when set end voltage phase hit
Rotor controls in voltage direct compensation, when set end voltage phase jumps, in order to increase the standard of unit allocation
True property, the rotor that unit provides control voltage compensation quantity are as follows:
Wherein, s is unit revolutional slip, LmFor rotor mutual inductance, LsFor stator inductance, UsFor set end voltage virtual value, Δ urd
(Δ θ) is that the rotor d axis based on phase hit value controls voltage compensation quantity, Δ urq(Δ θ) is the rotor based on phase hit value
Q axis controls voltage compensation quantity.
3) determine that rotor controls voltage when set end voltage phase hit
Rotor controls in voltage direct compensation, when set end voltage phase jumps, according to formula (2) fault traversing process
In, double-fed fan motor unit rotor controls voltage and can be indicated with formula (3).
Wherein, urdNot consider that the rotor d axis of phase hit controls voltage, urqFor the rotor q axis for not considering phase hit
Control voltage, urd1Voltage, u are controlled to increase the rotor d axis after compensation raterq1Electricity is controlled to increase the rotor q axis after compensation rate
Pressure.
Step 102 determines the double-fed fan motor unit rotor voltage direct compensation failure based on voltage-phase hop value
Control strategy is passed through to operate normally in double-fed fan motor unit control system, comprising:
Double-fed fan motor unit is straight according to the double-fed fan motor unit rotor voltage based on voltage-phase hop value being pre-designed
Compensation fault traversing control model and normal control mode operation are connect, guarantees that two kinds of control models of double-fed fan motor unit can have
Effect operation.
Step 103 judges double-fed fan motor unit control model based on detection machine terminal voltage signal, comprising:
The variation of real-time measurement set end voltage is stator voltage Us, as the reference conditions for judging unit allocation model selection；
Set end voltage range is judged, as set end voltage measured value UsWhen less than preset threshold value, double-fed fan motor unit enters low-voltage and wears
More operational mode, on the contrary double-fed fan motor unit operates normally.Wherein, which can be set as 0.9pu.
Step 104, double-fed fan motor unit are direct into the double-fed fan motor unit rotor voltage based on voltage-phase hop value
Compensate fault traversing control, comprising:
Unit enters fault traversing operational mode, and conventional failure passes through control strategy and rotor controls voltage direct compensation mould
Block is activated simultaneously, should be controlled based on the double-fed fan motor unit rotor voltage direct compensation fault traversing of voltage-phase hop value
It is tactful on the one hand to judge that set end voltage amplitude changes, obtain the rotor control voltage for not considering phase hit；On the other hand it detects
Set end voltage phase change, using formula (1)~(3) according to phase deviation, the increased rotor of real time modifying controls voltage compensation
Amount guarantees the accuracy and validity of the control of unit fault traversing, realizes double-fed fan motor unit when set end voltage phase hit
Fault traversing.
Step 105, double-fed fan motor unit operate normally control.
Embodiment 2:
Based on the same inventive concept, the present invention also provides a kind of double-fed fan motor unit fault traversing control system, due to
The principle that these equipment solve technical problem is similar to double-fed fan motor unit fault traversing control method, and it is no longer superfluous to repeat place
It states.
The system basic structure is as shown in Figure 4, comprising: voltage acquisition module and control model determining module；
Wherein, voltage acquisition module, for acquiring the set end voltage of double-fed fan motor unit；
Control model determining module, for it is pre- to determine that double-fed fan motor unit enters according to set end voltage and preset threshold value
If fault traversing control model or enter normal control mode；
Wherein fault traversing control model includes the phase hit value according to set end voltage, determines turning for double-fed fan motor unit
Son control voltage.
Wherein, double-fed fan motor unit fault traversing control system detailed construction is as shown in figure 5, the system further includes that failure is worn
More control module, fault traversing control module include；Compensation rate computation subunit, conventional voltage determine subelement and control electricity
It presses and determines subelement；
Compensation rate computation subunit calculates rotor control voltage for the phase hit value based on set end voltage in real time
Compensation rate；
Conventional voltage determines subelement, does not consider that the rotor of phase hit controls voltage for determining；
Control voltage determines subelement, does not consider the rotor control voltage and compensation rate of phase hit value for basis, really
Determine the rotor control voltage of double-fed fan motor unit.
Wherein, the phase hit value based on set end voltage calculates the compensation rate of rotor control voltage, such as following formula institute in real time
Show:
Wherein, s is unit revolutional slip, LmFor rotor mutual inductance, LsFor stator inductance, UsFor set end voltage virtual value, Δ urd
(Δ θ) is that the rotor d axis based on phase hit value controls voltage compensation quantity, Δ urq(Δ θ) is the rotor based on phase hit value
Q axis controls voltage compensation quantity, and Δ θ is phase hit value.
Wherein, phase hit value Δ θ is calculated as follows:
Δ θ=θ1-θ2 (2)
Wherein, θ2For the phase that the quick phaselocked loop of double-fed fan motor unit exports, θ1For the locking phase at a slow speed of double-fed fan motor unit
The phase of ring output.
Wherein, according to the rotor control voltage and compensation rate for not considering phase hit value, turning for double-fed fan motor unit is determined
Son control voltage, is shown below:
Wherein, urdNot consider that the rotor d axis of phase hit controls voltage, urqFor the rotor q axis for not considering phase hit
Control voltage, urd1Voltage, u are controlled to increase the rotor d axis after compensation raterq1Electricity is controlled to increase the rotor q axis after compensation rate
Pressure.
Wherein, threshold value includes: 0.9pu.
The system further include: strategy design module and confirmation module；
Strategy design module controls plan for designing the double-fed fan motor unit fault traversing based on voltage-phase hop value
Slightly；
Confirmation module, for determining the double-fed fan motor unit fault traversing control strategy based on voltage-phase hop value double
It is operated normally in feedback control system of wind turbines；
Control strategy includes: to determine the control model used, control model packet according to the set end voltage of double-fed fan motor unit
Include fault traversing control model and normal control mode.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that can be realized by computer program instructions each in flowchart and/or the block diagram
The combination of process and/or box in process and/or box and flowchart and/or the block diagram.It can provide these computers
Processor of the program instruction to general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices
To generate a machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute
For realizing the function of being specified in one or more flows of the flowchart and/or one or more blocks of the block diagram
Device.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that instruction stored in the computer readable memory generation includes
The manufacture of command device, the command device are realized in one box of one or more flows of the flowchart and/or block diagram
Or the function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer
Or the instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or box
The step of function of being specified in figure one box or multiple boxes.
Finally it should be noted that: above embodiments are merely to illustrate the technical solution of the application rather than to its protection scopes
Limitation, although the application is described in detail referring to above-described embodiment, those of ordinary skill in the art should
Understand: those skilled in the art read the specific embodiment of application can still be carried out after the application various changes, modification or
Person's equivalent replacement, but these changes, modification or equivalent replacement, are applying within pending claims.
Claims (10)
1. a kind of double-fed fan motor unit fault traversing control method, it is characterised in that:
Acquire the set end voltage of double-fed fan motor unit；
According to the set end voltage and preset threshold value, determine that the double-fed fan motor unit enters preset fault traversing and controls mould
Formula enters normal control mode；
The fault traversing control model includes the phase hit value according to the set end voltage, determines turning for double-fed fan motor unit
Son control voltage.
2. the method as described in claim 1, which is characterized in that the phase hit value according to the set end voltage determines
The rotor of the double-fed fan motor unit controls voltage, comprising:
According to the phase hit value of the set end voltage, the compensation rate of rotor control voltage is calculated in real time；
Determine the rotor control voltage for not considering phase hit；
According to the rotor control voltage for not considering phase hit value and the compensation rate, the double-fed fan motor unit is determined
Rotor controls voltage.
3. method according to claim 2, which is characterized in that the phase hit value based on the set end voltage, in real time
The compensation rate for calculating rotor control voltage, is shown below:
Wherein, s is unit revolutional slip, LmFor rotor mutual inductance, LsFor stator inductance, UsFor set end voltage virtual value, Δ urd(Δ
θ) voltage compensation quantity, Δ u are controlled for the rotor d axis based on phase hit valuerq(Δ θ) is the rotor q axis based on phase hit value
Voltage compensation quantity is controlled, Δ θ is phase hit value.
4. method as claimed in claim 3, which is characterized in that the phase hit value Δ θ is calculated as follows:
Δ θ=θ1-θ2 (2)
Wherein, θ2For the phase that the quick phaselocked loop of double-fed fan motor unit exports, θ1It is defeated for the phaselocked loop at a slow speed of double-fed fan motor unit
Phase out.
5. method as claimed in claim 3, which is characterized in that the rotor control for not considering phase hit value according to
Voltage and the compensation rate determine the rotor control voltage of the double-fed fan motor unit, are shown below:
Wherein, urdNot consider that the rotor d axis of phase hit controls voltage, urqFor the rotor q axis control for not considering phase hit
Voltage, urd1Voltage, u are controlled to increase the rotor d axis after compensation raterq1Voltage is controlled to increase the rotor q axis after compensation rate.
6. the method as described in claim 1, which is characterized in that the threshold value includes: 0.9pu.
7. the method as described in claim 1, which is characterized in that before the set end voltage of the acquisition double-fed fan motor unit, also
Include:
Design the double-fed fan motor unit fault traversing control strategy based on voltage-phase hop value；
Based on the double-fed fan motor unit fault traversing control strategy of voltage-phase hop value in double-fed fan motor unit control described in determining
It is operated normally in system processed；
The control strategy includes: to determine the control model used, the control mould according to the set end voltage of double-fed fan motor unit
Formula includes fault traversing control model and normal control mode.
8. a kind of double-fed fan motor unit fault traversing control system characterized by comprising voltage acquisition module and control model
Determining module；
The voltage acquisition module, for acquiring the set end voltage of double-fed fan motor unit；
The control model determining module, for determining the double-fed fan motor machine according to the set end voltage and preset threshold value
Group enters preset fault traversing control model or enters normal control mode；
The fault traversing control model includes the phase hit value according to the set end voltage, determines turning for double-fed fan motor unit
Son control voltage.
9. system as claimed in claim 8, which is characterized in that it further include fault traversing control module, the fault traversing control
Molding block includes；Compensation rate computation subunit, conventional voltage determine that subelement and control voltage determine subelement；
The compensation rate computation subunit calculates rotor control electricity for the phase hit value according to the set end voltage in real time
The compensation rate of pressure；
The conventional voltage determines subelement, does not consider that the rotor of phase hit controls voltage for determining；
The control voltage determines subelement, for according to the rotor control voltage for not considering phase hit value and the benefit
The amount of repaying determines the rotor control voltage of the double-fed fan motor unit.
10. system as claimed in claim 8, which is characterized in that the system also includes strategy design module and confirmation modules；
The strategy design module controls plan for designing the double-fed fan motor unit fault traversing based on voltage-phase hop value
Slightly；
The confirmation module, for determining the double-fed fan motor unit fault traversing control strategy based on voltage-phase hop value
It is operated normally in double-fed fan motor unit control system；
The control strategy includes: to determine the control model used, the control mould according to the set end voltage of double-fed fan motor unit
Formula includes fault traversing control model and normal control mode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810868128.8A CN109167382A (en) | 2018-08-02 | 2018-08-02 | A kind of double-fed fan motor unit fault traversing control method and system |
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| CN201810868128.8A CN109167382A (en) | 2018-08-02 | 2018-08-02 | A kind of double-fed fan motor unit fault traversing control method and system |
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| CN115425689A (en) * | 2022-09-30 | 2022-12-02 | 华北电力大学 | Doubly-fed wind turbine generator rotor side fault ride-through control method and system and electronic equipment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111509773A (en) * | 2020-04-24 | 2020-08-07 | 浙江运达风电股份有限公司 | Voltage source type wind turbine generator fault ride-through control method suitable for weak power grid |
| CN111509773B (en) * | 2020-04-24 | 2021-08-17 | 浙江运达风电股份有限公司 | Voltage source type wind turbine generator fault ride-through control method suitable for weak power grid |
| CN115425689A (en) * | 2022-09-30 | 2022-12-02 | 华北电力大学 | Doubly-fed wind turbine generator rotor side fault ride-through control method and system and electronic equipment |
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